/*
* RHQ Management Platform
* Copyright (C) 2005-2008 Red Hat, Inc.
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, version 2, as
* published by the Free Software Foundation, and/or the GNU Lesser
* General Public License, version 2.1, also as published by the Free
* Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License and the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License
* and the GNU Lesser General Public License along with this program;
* if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.rhq.core.domain.content;
import java.io.Serializable;
import java.util.HashSet;
import java.util.Set;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.NamedQueries;
import javax.persistence.NamedQuery;
import javax.persistence.OneToMany;
import javax.persistence.SequenceGenerator;
import javax.persistence.Table;
/**
* A RepoRelationship represents relationship with a {@link Repo}
* having a (@link RepoRelationshipType) which can represent parent/child,
* clone relationship etc.
*
* @author Sayli Karmarkar
*/
@Entity
@NamedQueries({
@NamedQuery(name = RepoRelationship.DELETE_BY_RELATED_REPO_ID, query = "DELETE RepoRelationship rr WHERE rr.relatedRepo.id = :relatedRepoId")
})
@SequenceGenerator(allocationSize = org.rhq.core.domain.util.Constants.ALLOCATION_SIZE, name = "RHQ_REPO_RELATION_ID_SEQ", sequenceName = "RHQ_REPO_RELATION_ID_SEQ")
@Table(name = "RHQ_REPO_RELATION")
public class RepoRelationship implements Serializable {
// Constants --------------------------------------------
private static final long serialVersionUID = 1L;
public static final String DELETE_BY_RELATED_REPO_ID = "RepoRelationship.deleteByRelatedRepoId";
// Attributes --------------------------------------------
@Column(name = "ID", nullable = false)
@GeneratedValue(strategy = GenerationType.AUTO, generator = "RHQ_REPO_RELATION_ID_SEQ")
@Id
private int id;
@JoinColumn(name = "RELATED_REPO_ID", referencedColumnName = "ID", nullable = false)
@ManyToOne
private Repo relatedRepo;
@JoinColumn(name = "REPO_RELATION_TYPE_ID", referencedColumnName = "ID", nullable = false)
@ManyToOne
private RepoRelationshipType repoRelationshipType;
@OneToMany(mappedBy = "repoRelationship", fetch = FetchType.LAZY)
private Set<RepoRepoRelationship> repoRepoRelationships;
// Constructor ----------------------------------------
public RepoRelationship() {
// for JPA use
}
// Public --------------------------------------------
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public Repo getRelatedRepo() {
return relatedRepo;
}
public void setRelatedRepo(Repo relatedRepo) {
this.relatedRepo = relatedRepo;
}
/**
* Describes the type of this repoRelationship.
*/
public RepoRelationshipType getRepoRelationshipType() {
return repoRelationshipType;
}
public void setRepoRelationshipType(RepoRelationshipType repoRelationshipType) {
this.repoRelationshipType = repoRelationshipType;
}
/**
* Returns the explicit mapping entities.
*
* @return the mapping entities
*
* @see #getRelatedRepos()
*/
public Set<RepoRepoRelationship> getRepoRepoRelationships() {
return repoRepoRelationships;
}
/**
* The repos that this repo relationship is associated with.
*
* <p>The returned set is not backed by this entity - if you want to alter the set of associated repos, use
* {@link #getRepoRepoRelationships()} or {@link #addRepo(Repo)}, {@link #removeRepo(Repo)}.</p>
*/
public Set<Repo> getRelatedRepos() {
HashSet<Repo> repos = new HashSet<Repo>();
if (repoRepoRelationships != null) {
for (RepoRepoRelationship rrr : repoRepoRelationships) {
repos.add(rrr.getRepoRepoRelationshipPK().getRepo());
}
}
return repos;
}
/**
* Directly assign a repo to this repo relationship.
*
* @param repo
*
* @return the mapping that was added
*/
public RepoRepoRelationship addRepo(Repo repo) {
if (this.repoRepoRelationships == null) {
this.repoRepoRelationships = new HashSet<RepoRepoRelationship>();
}
RepoRepoRelationship mapping = new RepoRepoRelationship(repo, this);
this.repoRepoRelationships.add(mapping);
//repo.addRepoRelationship(this);
return mapping;
}
/**
* Removes the repo from this repo relationship, if it exists. If it does exist, the mapping that was removed is
* returned; if the given repo did not did not belong to this repo relationship, <code>null</code> is
* returned.
*
* @param repo the repo to remove from this repo relationship
*
* @return the mapping that was removed or <code>null</code> if the repo did not belong to this repo relationship
*/
public RepoRepoRelationship removeRepo(Repo repo) {
if ((this.repoRepoRelationships == null) || (repo == null)) {
return null;
}
RepoRepoRelationship doomed = null;
for (RepoRepoRelationship rrr : this.repoRepoRelationships) {
if (repo.equals(rrr.getRepoRepoRelationshipPK().getRepo())) {
doomed = rrr;
//repo.removeRepoRelationship(this);
break;
}
}
if (doomed != null) {
this.repoRepoRelationships.remove(doomed);
}
return doomed;
}
@Override
public int hashCode() {
int result = 1;
result = (31 * result) + ((relatedRepo == null) ? 0 : relatedRepo.hashCode());
result = (31 * result) + ((repoRelationshipType == null) ? 0 : repoRelationshipType.hashCode());
return result;
}
@Override
public String toString() {
return "RepoRelationship: id=[" + this.id + "]" + "related repo=[" +
this.relatedRepo.getName() + "]" + "relation=[" + this.getRepoRelationshipType().getName()
+ "]";
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if ((obj == null) || (!(obj instanceof RepoRelationship))) {
return false;
}
final RepoRelationship other = (RepoRelationship) obj;
if (relatedRepo.getName() == null) {
if (other.relatedRepo.getName() != null) {
return false;
}
} else if (!relatedRepo.getName().equals(other.relatedRepo.getName())) {
return false;
}
if (repoRelationshipType.getName() == null) {
if (other.repoRelationshipType.getName() != null) {
return false;
}
} else if (!repoRelationshipType.getName().equals(other.relatedRepo.getName())) {
return false;
}
return true;
}
}